Simmons, George F Differential equations with applications and historical notes - 3rd ed. - Boca Raton CRC Press 2017 - xxi, 740 p. 4108 08/10/2021 HBD22/8859 11/10/2021 Main Budget ISBN: GBP 84.99 (RS 8728.47) Dewey Class. No.: 515.35 S47D(3)